The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 08, 2005
Filed:
May. 16, 2002
Dennis E. Jackman, Prairie Village, KS (US);
Dennis E. Jackman, Prairie Village, KS (US);
Bayer MaterialScience LLC, Pittsburgh, PA (US);
Abstract
The present invention provides a method of preparing 4-amino-3-alkylthio-1,2,4-triazine-5-ones of the formula (I):wherein R, R, Rand Rare as defined herein, the method comprising reacting in the presence of a base and under at least one condition selected from the presence of at least one inorganic compound selected from inorganic sulfites and inorganic bisulfites, an inert gas purge, and an alternating inert gas blanket and vacuum, a 4-amino-3-mercapto-1,2,4-triazin-5-one of the formula (II):wherein R, Rand Rare as defined herein, with an alkylating agent of the formula R—X, wherein Rand X are as defined herein and collecting the reaction product.